/**
 ******************************************************************************
 * @addtogroup PIOS PIOS Core hardware abstraction layer
 * @{
 * @defgroup   PIOS_DEBUG Debugging Functions
 * @brief Debugging functionality
 * @{
 *
 * @file       pios_debug.c
 * @author     The OpenPilot Team, http://www.openpilot.org Copyright (C) 2010.
 * @brief      Debugging Functions
 * @see        The GNU Public License (GPL) Version 3
 *
 *****************************************************************************/
/*
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
 * for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */

/* Project Includes */
#include "pios.h"

// Global variables
const char *PIOS_DEBUG_AssertMsg = "ASSERT FAILED";

/* Private Function Prototypes */

/**
 * Initialise Debug-features
 */
void PIOS_DEBUG_Init(void)
{}

/**
 * Set debug-pin high
 * \param pin 0 for S1 output
 */
void PIOS_DEBUG_PinHigh(uint8_t Pin)
{}

/**
 * Set debug-pin low
 * \param pin 0 for S1 output
 */
void PIOS_DEBUG_PinLow(uint8_t Pin)
{}


void PIOS_DEBUG_PinValue8Bit(uint8_t value)
{}

void PIOS_DEBUG_PinValue4BitL(uint8_t value)
{}


/**
 * Report a serious error and halt
 */
void PIOS_DEBUG_Panic(const char *msg)
{
#ifdef PIOS_COM_DEBUG
    register int *lr asm ("lr"); // Link-register holds the PC of the caller
    PIOS_COM_SendFormattedStringNonBlocking(PIOS_COM_DEBUG, "\r%s @0x%x\r", msg, lr);
#endif

    // tell the user whats going on on commandline too
    fprintf(stderr, "CRITICAL ERROR: %s\n", msg);

    // this helps debugging: causing a div by zero allows a backtrace
    // and/or ends execution
    int b = 0;
    int a = (2 / b);
    b = a;

    // Stay put
    while (1) {
        ;
    }
}

/**
 * @}
 * @}
 */
